Ventilator.



J. McCLELLAND.

VENTILATOR.

APPLICATION FILED 050.2. l9l6.

Patented Apr. 29, 1919.

JOHN MCCLELLAND, OF KANSAS CITY, MISSOURI.

VENTILATOR.

Specification of Letters Patent.

Patented Apr. 29, 19112.

Application filed December 2, 1916. Serial No. 134,603.

To all whom it may concern:

Be it known that I, JOHN MOCLELLAND, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Ventilators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to ventilators, and more particularly to a device of that character for use in schools, churches, or other buildings, where it is desirable to draw air from the interior of the building, the principal object of the invention being to provide improved controlling mechanism for the ventilator louvers.

In accomplishing this and other objects of the invention, I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Figure I is a side elevation of a ventila tor embodying my improvements, parts of the ventilator tube and cowl being broken away to illustrate the interior mechanism.

Fig. II is an inverted plan view of the parts showvn in Fig. I.

Fig. III is an enlarged plan view of the upper ball race cap, the cowl supporting standard being in cross section.

Fig. IV is a vertical section on the line IV-IV (Fig. III).

Referring more in detail to the drawings:

1 designates a ventilator tube and 2-3' rings that are fixed to the inner surface of the tube in spaced relation, adjacent the top thereof, and which carry the spiders 4-5 which, in turn support the ball race members 6-7, the lower spider being located wholly within the tube and the upper spider being projected thereabove so that the ball race members are spaced to provide a rigid and substantial bearing for the standard hereinafter described.

The lower ball race members 6-7 have interior spaces 9 through which is extended a standard 11, that is supported in the manner presently described and is adapted to rotate within the said lower race members.

The standard 11 preferably comprises a right angle wing member that may be formed from two pieces of T-iron 12-13, having their body portions riveted or otherwise connected to form a unit of the separate pieces, and having their wings I l-15 secured to flanges 16-17 of the race caps 18-19 that overlie the race members 6-7 on the two spiders, so that the standard is supported from the race members 6-7 and may turn freel therein.

The standard 11 projects upwardly beyond the top race cap, and suspended from said standard is a cowl 21 of any suitable construction, but having the ventilator opening 22 in one side, and having its lower end suspended over the top of the tube and adapted for rotation thereabout; the end of the cowl being spaced from the tube to pro- .v de sufficlent freedom for movement of the cowl and room for air currents to pass up between the air tube and cowl.

Pivotally mounted in the opening 22 are louvers 24, which are operable by a link 25 and lever 26, the said lever being pivotally mounted at 27 on a bracket 28 that is fixed within the cowl and the inner arm of said lever being pivotally connected at 29 with a rod 30 that extends into the cowl from the ventilator tube. The rod 30 lies within one of the angles of the cowl support 11 and extends through apertures 32 in the race caps 18-19 and through the interior chambers 9 of the caps 6-7, the lower end of the rod being bent beneath the standard 11 to axial alinement with the ball races so that the oil'- center arrangement of the upper portion of the rod will not interfere with free rotation of the cowl. At its lower end the rod 30 is provided with a swivel 33, whereby the upper rod member is connected with a member 34 that may extend to any suitable or convenient point for operation by a person when it is necessary to change the ventilating area of the cowl opening 22.

It is apparent from the foregoing description and from the drawings, that when the parts are assembled as described the ball races will be in axial alinement but one will be located within the ventilating tube and the other within the cowl, so that the supporting standard is firmly braced from both members at spaced points. When the louver operating rod is arranged as described, a person wishing to change the position of the louver may push or pull on the rod and thereby rock the lever 26 to open or close the louver, the off-set arrangement of the upper portion of the rod along the standard being immaterial as long as the lower end is turned inwardly to the axial alinement. With this arrangement, rotation of the cowl about the tube will not be alfected by the standard or actuating rod as such parts may turn with the cowl Without interfering with the fixed parts.

Having thus described my invention, what I claim as new therein and desire to secure by Letters-Patent, is:

' 1. A ventilator comprising an air conducting tube, means on said tube for carrying a standard, a standard rotatably mounted in said means and comprising T members having their bases rigidly connected and their wings extended oppositely to form recesses race caps fixed to said standard and supported on the lower race members onsaid supporting means, a cowl supported by said standard and having louvers, mechanism including a lever for actuating said louvers, a rod lying in one of the standard recesses and extending through the Gopies of this patent may be obtained for race members, the upper end of the rod being connected with said lever and the lower end turned beneath the standard and extended in axial alinement therewith.

2. A ventilator comprising an air conducting tube, spiders carried by said tube, race members carried by said spiders, a standard rotatably mounted in said race members and comprising T-members, having their bases in abutment and having projecting wings, race caps having openings therein for the standard, and having flanges fixed to the standard wings, whereby the standard is supported by the lower race members, a cowl supported by the standard and having louvers, mechanism, including a lever, for actuating the louvers, and a rod lying in one of the standard recesses and extending through the race members, the upper end of the rod being connected with said member, and the lower end turned beneath the standard and extended in axial alinement therewith.

In testimony whereof I aflix my signature.

JOHN MoC'LELLAND.

Washington, D. G. 

